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FillStub - options trading journal
com.fillstub/options-trading-journal in the official MCP registry.
Endpoint https://mcp.fillstub.com/mcp.
The registry describes it as: Options journal from broker exports: contract lifecycle, Section 1256 vs 8949 tax split, intervals
On 2026-10-27 this server answered but did not list any tools to us. Nothing was checked: this is not a clean result.
Rather than checking back: subscribe to this server's tool changes (a feed, no account and no address needed). Tool names and dates only, never what a tool says.
Run this server? Show the check in your README
The badge reflects the latest read: 
[](https://lazaretto.dev/mcp-registry/com-fillstub-options-trading-journal)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.
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